| 摘要 |
PURPOSE:To obtain the best receiving state at all times, by providing a display means for displaying whether a signal level is specified value or above, or not, when a signal from an antenna has been applied. CONSTITUTION:Between an antenna 1 for receiving a radio wave sent from a satellite, and a television set 3a to which a signal from the antenna 1 is supplied, a display means 7a for displaying whether a signal level is specified level or above, or not when the signal from the antenna 1 has been applied is provided. Also, only when the signal from the antenna is of a specified value or above, the display means 7a is lighted. |
